BY W. E. COLI.EPGE. 47 



The colour is sometimes cream, or varying shades of pink up to 

 red. Patches of the same colour are often repeated on the 

 centre of the third, fifth and seventh dorsal segments. Some 

 times two stripes run parallel down the back. They are there- 

 fore more handsome and interesting than the common mosquito. 

 Its head is also smaller, the maxillary brushes curve in the 

 opposite direction and are less complicated. The neck is very 

 flexible. x\ frequent practice is to twist the head round so that 

 the forehead lies in the same plane as the abdomen. This 

 position does not appear to be inconvenient, for it eats and 

 swallows food all the time. One of these gentlemen is seen in 

 Fig. 2. You can see the small, narrow, slightly oval head, the 

 expanded brushes, and the tail diflers entirely from the ordinary 

 kind. The long projecting tracheal tube has disappeared, and 

 though a paddle with four triangular blades is there, yet it is 

 small, and projecting downwards is a broad fan composed of 

 setoe or strong bristles, enabling it to swim rapidly through the 

 water. Three of the terminal segments are seen in the next 

 slide, showing more clearly the propelling apparatus with two of 

 the triangular paddle blades, the other pair are hidden by the 

 bristles. One peculiarity of the Anopheles is what I have called 

 a series of epaulettes on the segments of the back. Their 

 dibcovery about a year ago was. to me, a source of great pleasure, 

 I do not know whether they are actually new to science, but I 

 have not seen any reference to them in the literature on the subject, 

 so it is possible that they may be so. Lix of the abdominal 

 segments bear a pair of these peculiar organs on their dorsal 

 surfaces, so that there are twelve altogether. They rise on a 

 short channelled stalk from the skin and then spread out their 

 star-shaped leaves like a flower. The radii would form a 

 complete circle or star, but that on the side directed to the bo'Jy 

 a few of the points are always missing. It therefore forms 

 three quarters of a circle. In Fig. 3 are three abdominal 

 segments showing how they rise upward from the back. The 

 next slide is a perpendicular view showing how they are 

 arranged on the back ; one is traceable in each corner of the 

 segments. Fig. 4 gives a good idea of the structure, but the 

 view being taken at an angle does not give so natural an idea as 

 the succeeding slide. Rising upwards like a flower, anyone 

 famihar with high power photography will know the difficulty 

 experienced in representing the parts lying in different planes 

 in one picture. 



