402 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 54. 



dominal segment. Six sectional drawings of various stages of the 

 embryo are presented. 



The writer has many slides containing triungulinids of various 

 species in various stages of embryonic development as well as ready 

 to emerge, all taken from single parents. 



Metamorphosis. 



A speciment of Pseudoxenos ivom. a female RhygcMum collected 

 by F. Muir in Amboina was extracted as a perfect male in its 

 pupariura, having shed its pupal skin. The larval skins were in a 

 compact' mass at the apex of the puparium. This is the first time 

 they have been found. The material was received preserved in 

 alcohol, which accounts for its perfect condition. 



Alimentation. 



With regard to the nourishment of Stylops melittae., Smith and 

 Hamm (1914) remark that: 



The skin,, except where the epithelium of the brood passage is especially 

 modified, is exceedingly thin, and the nourishment of the body must take place 

 by absorption through this skin. There are no special cells for seizing on or 

 elaborating a special kind of food either in the skin or elsewhere, so that v/e 

 may suppose that the haemolymph of the bee affords a ready-made medium 

 which supplies the parasite with all that is requisite. 



Attraction of males to light. 



In Bulletin 66 mention was made of the collection of an Elenchus 

 at light' in Ceylon. This was the first record of such a capture. In 

 the supplement to the monograph (Pierce, 1911) the writer added 

 to this species Triozocera texana., taken at light in Texas, and Myr- 

 mecolax nietneri.^ taken at light in Ceylon. Four more such records 

 have now appeared in print, and another is added in this paper. 

 The eight species thus recorded belong one in Mengeidae, one in 

 Mengenillidae, one in Myrmecolacidae, one in Stylopidae, three in 

 Halictophagidae, and one in Elenchidae. 



AUSTKOSTYLOPS GRACILIPES Lea. 



Several males were collected in the greasy oil of a lamp at Bridge- 

 town, West Australia, in 1895 (Lea, 1910). 



PARASTYLOPS FLAGELLATUS Meijere. 



Males were collected at lights at Semarang, Java, in January, 

 February, October, and September (Meijere, 1911). 



TETTIGOXENOS CLADOCERAS Jeannel. 



The type male of this species was taken at a light at Station No. 8, 

 south of Mombasa, at the river Ramisi, in British East Africa, in 

 November, 1911. The type locality is illustrated (Jeannel, 1913). 



