Download PDF as one large file - AToL Decapoda

Family Majidae 495
22. (21) Byes furnished with orbits completely enclosed, often outstanding and tubular. 23
Orbit unprotected below; eyes protected above by lamellate projection consisting
of supraocular eave and outgrowth of hepatic region . 24
23. (22) Rostrum long, greatly advanced beyond orbits; preocular spine twice length of
remainder of orbit; legs filiform; first movable segment of antenna cylindrical
Picroceroides tubularis
Rostrum short, little if at all advanced beyond orbits; preocular spine not long;
legs moderately robust; first movable segment of antenna flattened .. Pitho
24. (22) Basal prolongation of exopod of third maxilliped curving forward and usually
lodged in groove of ischium of endognath; abdomen 7-segmented in both sexes ...
Tyche emarginata
Basal prolongation of exopod of third maxilliped not recurving; merus of
endognath strongly arched, brilliantly glistening, and porcellanous; abdomen of
female with segments 4-6 coalesced Stilbomastax margaritifera
25. (21) Rostrum double 26
Rostrum single or secondarily divaricate 27
26. (25) Seven free abdominal segments in both sexes Sphenocarcinus corrosus
Six free abdominal segments in both sexes; legs subchelate
Acanthonyx petiverii
27. (25) Six free abdominal segments in male, five in female Epialtus
Five free abdominal segments in male Mocosoa crebripunctata
28. (1) Intercalated spine present; orbits sometimes projecting beyond general outline of
carapace, but never tubular 29
Intercalated spine absent; orbits tubular 32
29. (28) Orbits not projecting laterally beyond general outline of carapace; carapace
subtriangular; legs cristate , 30
Orbits projecting laterally somewhat beyond general outline of carapace 31
30. (29) Carapace very high on median line; basal segment of antenna broader than long....
Hemus cristulipes
Carapace not noticeably high on median line, lobulate; basal segment of antenna
no broader than long Thoe puella