3^2 Records of the Indian Museum. [Voi ( . XXIV, 



merit. The ninth has a rounded lateral spot, and the tenth is en- 

 tirely black. The auricle is yellow and the genital structures of 

 the second segment are black. The abdomen is slender, the seg- 

 ments 7-9 rather wider and deeper than the rest. 



The upper anal appendages, which are pale yellow with dark- 

 ened apices are a little longer than the 9th segment of the abdomen. 



Each is chelate ; the outer branch 

 is much the stouter and dimin- 

 ishes gradually to its apex. The 

 inner branch is slender, cylin- 

 drical, and is widest at about 

 its middle. The two branches 

 separate at about the middle of 

 the total length of the appendage 

 and run at an angle of about 

 6o° to one another. The outer 

 ... , , ,,. branch is quite straight, the inner 



Img. 46. — Anal appendages ot Micro- . .. ^ ,. , , ., 



~ gomphus torquatns (Selys) <?, »s turned a little upwards at its 

 seen from above. apex. The lower appendage is 



about two-thirds of the length 

 of the upper pair. It is brownish black in colour, has nearly 

 parallel sides, and at its apex divides into two short branches which 

 run a little outwards and upwards. 



The vesicle of the penis is large and conspicuous, almost as 

 striking a feature of the male as in Cyclogomphus. 



Female. Colouring of the head, prothorax and synthorax as 

 in the male. The abdominal colouring differs chiefly in that the 

 two dorsal marks on the third segment are united, that on the 

 fourth segment relatively longer, and in the fact that lateral spots 

 lying at about the middle of the length of the segment occur on 

 segments 4 and 5, that on 5 being very small. The anal ap- 

 pendages are minute, yellow in colour, and the abdomen is re- 

 gularly cylindrical from the end of the third segment to the apex. 



Length of abdomen of d> 23*5 mm., of hinder-wing 21 mm. ; 

 length of abdomen of 9 25"5 mm., of hinder-wing 2275 mm. 



It is curious that in this the smallest of the old-world Epigom- 

 phines the anal appendages of the males should bear a strong resem- 

 blance to those of Macro gomphus, a genus which includes the 

 largest species of the series. 



Microgomphus was founded by deSelys to include a species, 

 M. chelifer from Malaya, which until Major Fraser's discovery of 

 the male of the present species remained the only known example 

 of the genus. The finding of a second species in Peninsular India 

 under climatic conditions which must be very different from those 

 obtaining in the countries inhabited by M . chelifer is interesting 

 and a little surprising. 



The larva of M. torquatus has been figured and described by 

 Major Fraser under the name of Cyclogomphus minusculus Selys. 



The Malay species differs from M. torquatus in having the 

 dorsal band of the synthorax confluent at its upper extremity with 



