272 



Miss H. Richardson oti the Isopoch of the 



Benedict, from Pensacola, Florida, presents points of differ- 

 ence which are interesting and which can easily be recognized 

 in the manuscript quoted in the footnote (pp. 271-273). 



59. Cleanti's Ileathn, sp. n 



Body slender, elongate ; surface smooth. 

 Head with lateral margins straight ; 

 slightly excavate. Eyes small, lateral. 

 First pair of antenna? consist of four 

 joints and are a little longer than half 

 the width of the head. The second 

 pair of antennae are half as long as 

 the body and are composed of nine 

 joints, the three terminal ones forming 

 the flagellum, which cannot be distin- 

 guished from the peduncle. 



Thoracic segments subequal, with 

 narrow epimera, those of the second, 

 third, and fourth segments reaching 

 but half the length of the segments, 

 the last three epimera extending to 

 the extremity of the segments. 



The abdomen is composed of three 

 segments with suture- lines indicative 

 of another. The terminal segment 

 is broadly rounded posteriorly, with 

 small but acute lateral angles. Tlie 

 sides are almost parallel. 



The first four pairs of legs are 

 directed anteriorly ; the last three 

 extend in a posteriordirection. There 

 is no perceptible inequality in length 

 Two specimens wei'e sent by Mr 

 Bay, California. 



Tt/pe. No. 22577, U.S. N. M. 



anterior margin 

 Fie:. 25. 



Cleantis Heathii. X C)|. 



The dactyli are bifid. 

 Heath from Monterey 



centre of the head. The eyes are situated near the antero-lateral angle ; 

 postoccipital lobe distinct ; antennae with six segments, first very short and 

 nearly immobile, second very short and stout ; the third segment is equal in 

 length to the second, but not so stout ; the fourth and tilth are of equal 

 length and about one third longer than the second and third segments. 

 The terminal segment or flagellum is lighter in colour and is armed with 

 .'^hurt bristles. The length of the antennse is equal to the length of the 

 liead and first two thoracic segments. The antennulae extend to the 

 middle of the third segment of the antennae. The first segment is 



