bo 
bo 
Memoirs of the Indian Museum. [Vor. IV, 
pace ; lateral margin of seventh thoracic somite 
not bilobed bf 3¢ .. boops, p. 55. 
2. Rostrum without median carina; breadth of 
cornea much less than one-third of median 
length of carapace; lateral margin of seventh 
thoracic somite distinctly bilobed. 
a. Cornea set almost transversely on eye- 
stalk; outer inferior margin of raptorial 
merus terminating in a sharp tooth; an- 
terior lobe of seventh thoracic somite short guinguedentata, p. 52. 
b. Cornea set obliquely on eyestalk; outer in- 
ferior maigin of raptorial merus not ter- 
minating in a tooth; anterior lobe of 
seventh thoracic somite well-developed, 
more than half as long as posterior lobe .. gonypetes, p. 54. 
B. Raptorial dactylus with six teeth.! 
1. Cornea not wider than eyestalk; rostrum with 
short median carina; surface of carapace and 
abdomen with a coarse mesh-like reticulation foveolata, p. 58. 
2. Cornea very clearly wider than eyestalk; ros- 
trum without median carina; surface of cara- 
pace and abdomen smooth or rugose, never 
reticulate. 
a. Cornea set transversely on eyestalk. 
i. Posterior half of median carina of cara- 
pace, anterior to cervical groove, 
simple; submedian carinae of fourth 
abdominal somite ending in spines .. mefa, p. 60. 
ii. Posterior half of median carina of cara- 
pace, anterior to cervical groove 
finely bicarinate throughout almost 
its entire length; submedian carinae 
of fourth abdominal somite not ending 
in spines ae ne . holoschista, p. 64. 
b. Cornea set very obliquely on eyestalk. 
i. Lateral carinae of first five abdominal 
somites simple—not bicarinate. 
a, No rows of tubercles on either side 
of median crest of telson. 
(i) Anterior breadth of carapace 
less than half its median 
length, including rostrum; 
anterior bifurcation of medi- 
an carina of carapace rarely 
altogether obsolete ; anterior 
margin of ophthalmic somite 
convex, truncate or emargin- 
ate; dorsal surface of cara- 
! Including the terminal tooth. 
