24. MTBiENA. 107 



Thyrsoidea tessellata, Kaupy Apod. p. 76, 



isingleena, Kaup, Apod. p. 75, fig. 57. 



Gymno thorax isingteena, Bleek. Atl. Ichth. Mm. p. 92, pi. 37. fig. 1. 

 tessellatus, Bleek. I. c. p. 93, pi. 27. fig. 3, and pi. 28. fig. 1. 



Teeth uniserial, younger examples sometimes with, two or three 

 additional teeth, forming an inner maxillary series. Canines mode- 

 rately developed ; the mouth can be shut completely. Anterior 

 nasal tubes much shorter than the vertical diameter of the eye. 

 GiU-opening wider than the eye. Snout compressed, of moderate 

 length ; eye rather small, rather less than half the length of the 

 snout, situated above the middle of the cleft of the mouth. Cleft of 

 the mouth wide, its width being contained twice and one-third in 

 the length of the head. Tail nearly as long as the body ; the length 

 of the head is one-third of that of the trunk. Head, body, and fins 

 with large polygonal or rounded black spots separated by narrow 

 white Hues (tessellata) or by distinct interspaces of the ground-colour, 

 all or most of the spots being wider than the interspaces (ising- 

 teena). 



Indian Ocean and archipelago. 



a. var. tessellata. 



a. Large specimen. Africa. Presented by — Nimmo, Esq. — Type 



of M. python, Kaup. 



b. Fine specimen. Zanzibar. Presented by Lieut. -Col. Playfair. 



c. Half-grown : stuffed. Zanzibar. Presented by Lieut.-Col. Play- 



fair. 



d. Adult. East-Indian archipelago. From Dr. Bleeker's Col- 



lection. 



e. Young. Presented by Sir J. Richardson. — T^pe of M. tessellata. 



13. var. intermedia. 



f. Adult : stuffed. From the Collection of the Zoological Society. 



g. Adult. From Dr. Kaup's Collection. 



y. var. isingteena. 



h. Adult : stuffed. China. Presented by J. R. Reeves, Esq. — One 

 of the types of M. isingteena. 



i. Half-grown. China. Presented by J. R. Reeves, Esq. — One of 

 the types of M. isingteena. 



k. Half-grown. East-Lidian archipelago. From Dr. Bleeker's 

 Collection. 



I, Half-grown: stuffed. Mauritius. From Dr. Janvier's Col- 

 lection. 



m. Adult: stuffed. Zanzibar. From Lieut.-Col. Playfair's Col- 

 lection. 



n. Skull. 



21. Mursena reevesii. 



Richards. Ichthyol. Sidph. p. 109, pi. 48. fig. 2. 

 Teeth uniserial, without basal lobe ; there are about 17 on each 

 side of the mandible. Canines of moderate size, the jaws shutting 



